Here’s a fun project that you can make that will amaze your friends. When done, a tiny jack is contained inside a cube with a hole in it. How did they get in there? How was it made? The kit includes an aluminum cube to practice on and a brass cube for your finished puzzle. Producing the finished cube requires a series of drilling and boring processes explained in the step-by-step illustrated instructions that come with the kit.

Detailed Equipment List You Will Need for this Project

4-Jaw Self-Centering Chuck, P/N 1075 (2.5″) or
P/N 1076 (3.1″)

Chuck Adapter, P/N 37090 (included for fastening the chuck to the rotary table)

3/8″ diameter end mill holder, P/N 3079

1/8″ End Mill, 3/8″ Shank, P/N 7402 (2-Flute)

* NOTE: If you already own a CNC mill you do not need a rotary table. You can, instead, write a G-code sequence to accomplish the task.

What’s Included:

The J1000 kit includes both an aluminum and a brass billet of 3/4″ square stock cut to slightly over 3/4″ long ready for you to make this interesting puzzle on your Sherline mill. Included are a P/N 3079 3/8″ end-mill holder, and P/N 7402 1/8″ End Mill, 3/8″ Shank (2-Flute), a key ring and instructions. Complete kit instructions are included that take you step-by-step through the facing, drilling and boring processes needed to free up the jack within the raw stock.